Vaporizer for hydrocarbon engines



LMSMQZ C. A. WULF VAPORIZER FOR HYDROCARBON ENGINES Filed Sept. 5. 1920 & V")? 6602126319 1 1 2617;

Ewaen intake manifold Patented Dec. 18, 1923.

. tit" J CHARLES A. WULF, 0F INDIANAPOLIS, INDIANA.

VAPORIZER FOR HYDROCARBON ENGINES.

Application filed September 3, 1920. Serial No. 107,900.

To all whom-it may concern:

Be it known that I, CHARLES A. WULF, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented new and useful Improvements in Vaporizers for Hydrocarbon Engines, of which the followin is a specification.

The object of this invention is to take the hot vapors from the radiator overflowpipe without interfering with the other functions of the pipe, and supply it to the regulated by a valve opened and closed by a thermostat in turn influenced by the heat generated by the hydrocarbon explosions, and without danger of introducing water into the mixture'to deaden it.

The object is to provide a thermostatic control that will hold the valve of the steam supply closed at the starting of the engine and until heat enough has been developed to insure beneficial results by the intro ductionof the requisite quantity of steam as the engine runs fast or slow and its requirements vary.

Another object is to provide means for regulating a thermostatic spring controlling the valve, to prevent chattering noises at some speeds of the engine, caused by the rapid seating and unseating of the valve.

The object further is to provide a simple device with but two moving parts so con structed that a novice can install them, and can take the valve apart and reassemble it without danger of making a mistake.

I accomplish the above, and other ob- .jects which will hereinafter appear, by the mechanism illustrated in the accompanying drawing, in WhlCh v Figure 1, is an illustrative view showing the application of my invention. Fig.2, is a top plan view of the valve and appurtenant parts. Fig. 3 is a view of same with the housing removed and looking in the direction of the arrows 3-3 of Fig. 2.

Fig. 4 is a sectional View through the ther-- i mostat and valve on the line 4-4, of) Fig.

1, and Fig. 5, is a detached View of the coupling to the radiator-overflow pipe.

Like characters of reference indicate like parts in the several views of the drawing. Referring to the drawings, the numeral 6 refers to an engine provided with the usual adjuncts, as an inlet manifold 7, communicating with a carbureter 8, and the of the engine in quantitieswith a conical valve as shown The radiator 10, of usual construction,

has the usual overflow pipe 11, the length of which I extend by attaching a short ipe 12, to its lower end by means of a ru ber sleeve 13, or other suitable means. This pipe 12 has a lateral branch 14;, midway of its length or sufiiciently above its lower end to avoid drawing water int-o the branch by suction, and so as not to interfere with the normalaction of the pipe 12 as an overflow drain. to the radiator.

Secured to a hot part of the mechanism, here shown as bolted to the exhaust manifold 9, is a bracket 15, havin a barrel 16, with a bore in which the be y-portion 17, of a valve-stem makes a close sliding fit. The inner end of the bore of the barrel is reduced and continued through a nipple 18. The stem is reduced and terminates in Fig. 4 which is seated at the junction of the large and small bores of the barrel, as shown in Fig. 1. The reduced inner diameter of the valve stem provides a chamber into which a lateral hole of approximately the same diameter as the reduced bore of the barrel discharges. This lateral hole is continued through a nipple extension 19. Both nip' ples 18 and 19, are screw-threaded to receive screw-caps 20, by which pipe lines 21 and 22, respectively are connected. The

' in Fig. 1.

Formed on the bracket 15, at the end of barrel 16, is a plate 24, with outwardly disposed end flanges 25, 25, the ends of which are preferably tapered on the outs1de to facilitate the insertion over them of a boxcap 26. Secured to the plate 24:, by screw 27, is a leaf spring 28, formed of two laminations of diflerent metals f widely diflerent expansibility when heated, here shown as iron and brass, with the brass member 5, toward plate 24, and iron a more remote. This spring is bifurcated at its free and Hill) and enters an annular groove 29, in the suitably extended end of valve stem member 17. The groove is at an appreciable distance out from the adjacent surface of plate 24, when the valve is seated to enable the spring when cold to positively seat the valve, and the space thus provided allows for the proper assembly of a bearing-plate at the other end of the spring between the spring and plate. The bearing-plate 30 preferably has a flange 31 on which the end of the spring 28 is fulcrumed, thereby enabling the spring to be tensioned by means of the screw' 27 Because it is necessary that spring 28 be assembled with the brass side 1), toward plate 24, I form a lug 32on plate 24, requiring the spring 28 to be correspondingly clipped to fit it, which makes assembly impossible except in the right way. 7

- he operation of my invention is as follows: When the engine is started cold and it is not desirable to have the above communication into manifold 7 open, the Valve is seated by spring 28, and communication is closed. But when the engine gets hot the evepee valve is opened by the thermostatic action of the spring 28, and any tendency of the valve to chatter is stopped by moving the screw 27. By connecting with overflow pipe 11 through the lateral branch it, above the end of thepipe, only steam will pass over by the suction of the engine and thewater will drain out at the end of the pipe 11 as usual.

Having thus fully described my invention what I claim as new and wish to secure by Letters Patent of the United States, is

In a device of the class described, the combination with a radiator overflow pipe in two parts, a flexible connection between the two .parts, the part most remote from the radiator having a lateral branch, an engine intakemanifold, a pipe line connecting the lateral branch of the overflow pipe with the manifold, a valve in said line, a thermostat operated by heat from said radiator to open the valve and-means in the thermostat to prevent the chattering of the valve.

Signed at Indianapolis, Indiana, this the 26 day of August 1920.

C LES A. WULF. 

